2012–2013 Polaris Sportsman 400 H.O. / 500 2012–2013 Service Manual (P/N 9923792)

• Original OEM publication P/N 9923792 (copyright 2012 Polaris Sales Inc.) serving as the primary factory reference for the entire 2012–2013 production build.
• Covers the Polaris Sportsman 400 H.O. and 500 series, including Touring, Forest, and EFI Tractor variants.
• Spans 438 pages containing detailed engine exploded views, wiring schematics, and complete torque specification tables.
• Documents both carbureted and EFI fuel systems across all 400 and 500 platform configurations.
• Details Polaris Variable Transmission (PVT), Engine Braking System (EBS), Active Descent Control (ADC), MacPherson struts, and Centralized Hilliard gearcases.
• Features Throttle Position Sensor (TPS) initialization, Mikuni BST carburetor tuning, CV joint replacement, and Digital Wrench testing.

Contents Overview

Shop technicians and mechanics need fast access to reliable data. This OEM PDF manual delivers precise technical documentation for chassis diagnostics, engine maintenance, and electrical system troubleshooting. You'll find initial sections breaking down VIN decoding, vehicle identification, and factory paint codes. Next comes a comprehensive outline of periodic maintenance charts and approved lubricant listings. Having exact factory tolerances readily available streamlines the workflow and eliminates the trial-and-error method, allowing technicians to fix complex drivetrain issues efficiently and increase daily shop throughput.

Since ATV maintenance involves high-pressure components and heavy lifting, always review the manufacturer's foundational safety protocols outlined in the opening chapters before starting diagnostic work.

To save you an expensive trip to the dealership, this manual provides step-by-step breakdowns for labor-intensive tasks like bleeding the ADC differential hydraulic circuit, extracting the water pump mechanical seal, and fully rebuilding the PVT clutches. The core technical content dives into cylinder head disassembly, valvetrain inspection, crankshaft runout, and transmission repair sequences. Need to trace a short? The electrical references include alternator output ratings, circuit breaker specifications, and critical sensor values. Drivetrain chapters break down gear ratios, front gearcase maintenance, and altitude-specific clutching setups. To further assist with component identification and wire routing, the documentation includes oil flow diagrams, carburetor jetting charts, starter lockout diagrams, EFI circuit testing diagrams, and brake system exploded views.

Experienced mechanics working on the Fuji 4-cycle platform know that the exhaust valves share a common rocker arm, making simultaneous dual-feeler gauge measurements critical. Furthermore, attempting to extract the water pump mechanical seal without keeping the specialized factory puller tool perfectly parallel to the shaft frequently leads to a bent pump shaft, turning a basic seal replacement into a mandatory crankcase separation. This manual provides the correct procedures to avoid these common workshop traps.

Specification Previews

Accurate specs prevent costly comebacks. The manual provides hard data for the Fuji 498cc platform, listing a compression ratio of 10.2:1 alongside the exact service limit for compression pressure. You get verified torque values for all major engine fasteners—from cylinder head bolts to crankshaft nuts—listed in both ft-lbs and Nm.

• Intake valve clearance for the 500 H.O. sits at 0.006” (0.15 mm).
• Radiator cap relief pressure is set at 13 PSI (89.6 kPa) for both carbureted and EFI variants.
• Alternator output for the fuel-injected Forest Tractor 500 EFI rates at 350 watts @ 5000 RPM.